The Existence of Egyptian Coins Bearing the Face of Arsinoe

The existence of Egyptian coins bearing the face of Arsinoe II alone suggests which of the following?

A) She was able to influence Egypt's economy, but held little power militarily.
B) Her power was derived from her brother and coruler.
C) She was a powerful ruler and influenced many facets of Egyptian life.
D) Her brother and coruler sought to distance himself from his sister, who had fallen out of favor among Egyptians.